Finding the Third Proportional to 68,439,930 and 152,181,516

Step by Step Solution

1. Step 1: Write the proportion equation
   68,439,930 : 152,181,516 = 152,181,516 : x
2. Step 2: Convert to fraction form
   68,439,930/152,181,516 = 152,181,516/x
3. Step 3: Cross multiply
   68,439,930x = 152,181,516 × 152,181,516
4. Step 4: Simplify right side
   68,439,930x = 23,159,213,812,058,256
5. Step 5: Solve for x
   x = 23,159,213,812,058,256/68,439,930
6. Step 6: Final answer
   x = 338,387,456.15